Keystones — Lintel
Five GCSE retrieval questions · 13 September 2010 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 120,000 in standard form
Answer: 1.2 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² - x - 30
Answer: (x + 5)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 24cm, angle = 52°. Find opposite. Give your answer to 2 decimal places
Answer: 30.72cm -
4. Ratio Mixed ratio problems
£147.00 is shared between A and B in the ratio 5:2. How much does A receive?
Answer: £105.00 -
5. Statistics Mean
Calculate the mean of: 34, 28, 10, 20, 7, 24, 44. Give your answer to 2 decimal places
Answer: 23.86